heat of wetting

例句：

1. 1. The material requires a certain amount of wetting heat to soften before it can be used.
   这种材料需要一定的润湿热才能在使用前变软。
2. 2.The wetting heat is an important factor in determining the solubility of a substance.
   润湿热是决定物质溶解度的一个重要因素。
3. 3. The wetting process is crucial for the formation of new materials.
   润湿过程对于新材料的形成至关重要。